Senior Linux Systems Administrator

5 days ago


King George Virginia, United States Bowhead Full time
Senior Linux Systems Administrator

Bowhead is seeking a highly skilled Senior Linux Systems Administrator to join our team in Dahlgren, VA. As a key member of our IT team, you will be responsible for the administration and support of our Linux-based servers and workstations in a Research, Development, and Testing and Evaluation (RDT&E) environment.

Key Responsibilities:
  • Utilize Red Hat Enterprise Linux system administration experience to provide technical problem-solving and in-depth consulting relative to system operations.
  • Automate installation methods and system imaging using tools such as Kickstart and Ansible.
  • Implement and manage public key infrastructure (PKI) to create, manage, distribute, use, store, and revoke digital certificates and manage public-key encryption.
  • Implement DISA STIGs and work within Configuration-Managed Environments.
  • Analyze, design, and implement modifications to system software to improve and enhance system performance by correcting errors.
  • Plan new hardware acquisitions, interact with vendors, educate customers, and collaborate with other projects within the organization.
  • Support application installation, license management, software tracking/distribution, and backup/recovery of system configurations and user data files.
  • Understand and use essential tools for handling files, directories, command-line environments, and documentation.
  • Operate running systems, including booting into different run levels, identifying processes, starting and stopping virtual machines, and controlling services.
  • Configure local storage using partitions and logical volumes.
  • Create and configure file systems and file system attributes, such as permissions, encryption, access control lists, and network file systems.
  • Deploy, configure, and maintain systems, including software installation, update, and core services.
  • Manage users and groups, including use of a centralized directory for authentication.
  • Manage security, including basic firewall and SELinux configuration.
  • Configure static routes, packet filtering, and network address translation.
  • Set kernel runtime parameters.
  • Produce and deliver reports on system utilization.
  • Use shell scripting to automate system maintenance tasks.
  • Configure system logging, including remote logging.
  • Configure a system to provide networking services, including HTTP/HTTPS, DNS, SMTP, SSH, and NTP.
Qualifications:
  • Minimum five to eight years' experience in system administration of Linux-based servers and Linux-based workstations.
  • Ideal Linux Admin will have troubleshooting skills in RHEL 7/8/9 OS and basic knowledge of Networking fundamentals, specifically TCP/IP protocol suite and IP configuration.
  • Working knowledge of security guidelines and policies (DISA STIGs) and tools (Evaluate-STIG, STIG-Manager).
  • Knowledge of/experience with Tenable suite of products (Security Center, Nessus Scanner, Nessus Agent) is a plus.
  • Seeking specific experience with the following operating systems and services is required: Red Hat Enterprise Linux (RHEL 8.x with RHEL 7.x and/or RHEL9.x a plus).
  • Must meet DoD 8570 Information Assurance Workforce (IAWF) criteria or Information Assurance Technical (IAT) Level II certification at time of hire (i.e., Security+).
  • Have knowledge of corporate services including: DNS, SMTP, Splunk, Centralized patching solutions such as Red Hat Satellite, Automation solutions such as Ansible Tower/AWX.
  • Knowledge of/experience with: Single Sign on solutions such as RHSSO; Virtualization platform management systems such as VMWare/VSphere/Vcenter is a plus.
  • Demonstrated experience managing the installation and maintenance of IT infrastructure.
  • Experience working in an environment with rapidly changing job priorities.
  • Experience with Service Now or similar Ticket Management system.
  • Linux+ or Red Hat Certification preferred.

Security Clearance Requirements: Must be able to obtain and maintain a security clearance at the Top Secret level. US Citizenship is a requirement for this contract.



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